The Wagan EL2537-5 Twin USB and 12V DC Cup Holder Power Adapter now includes 5V2A USB is an essential 12V item for anyone who uses multiple electronics on the go. This upgraded item now includes a more powerful 5-volt/2-amp USB port which makes it compatible with the iPad and other tablet computers. Plus you can also charge electronics such as your cell phone or MP3 player while using your GPS, radar detector or satellite radio. Simply plug this item into your vehicle's 12V outlet and plug in your appliances. It conveniently fits into your existing cup holder so you have a central location for all your devices. Another useful feature is the battery level indicator LED lights which display the status of your vehicle's battery, allowing you to make adjustments if it is weak or needs charging.